Oilpan: Replace most of RefPtrs for Event objects with oilpan's transition types

Source/core/dom/Element.cpp

Index: Source/core/dom/Element.cpp
diff --git a/Source/core/dom/Element.cpp b/Source/core/dom/Element.cpp
index ac3092da54af2b2081b858041817f72464d0486c..9b966b8b2dfc773f22e734da177fa66d53ed592f 100644
--- a/Source/core/dom/Element.cpp
+++ b/Source/core/dom/Element.cpp
@@ -2221,13 +2221,13 @@ bool Element::isMouseFocusable() const
 
 void Element::dispatchFocusEvent(Element* oldFocusedElement, FocusType)
 {
-    RefPtr<FocusEvent> event = FocusEvent::create(EventTypeNames::focus, false, false, document().domWindow(), 0, oldFocusedElement);
+    RefPtrWillBeRawPtr<FocusEvent> event = FocusEvent::create(EventTypeNames::focus, false, false, document().domWindow(), 0, oldFocusedElement);
     EventDispatcher::dispatchEvent(this, FocusEventDispatchMediator::create(event.release()));
 }
 
 void Element::dispatchBlurEvent(Element* newFocusedElement)
 {
-    RefPtr<FocusEvent> event = FocusEvent::create(EventTypeNames::blur, false, false, document().domWindow(), 0, newFocusedElement);
+    RefPtrWillBeRawPtr<FocusEvent> event = FocusEvent::create(EventTypeNames::blur, false, false, document().domWindow(), 0, newFocusedElement);
     EventDispatcher::dispatchEvent(this, BlurEventDispatchMediator::create(event.release()));
 }